Question about 1999 Chevrolet Blazer

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Yesterday my wife and I ran some errands. Made a

I have a 99 chevy s-10 blazer 4.3l vortec. Yesterday my wife and I ran some errands. Made a couple stops. After the last stop it was hard to start but did. Then trying to give it gas to go it spit and sputtered. When I pushed the gas to go it would bog down, when I stopped it stalled. Eventually to not start again. I let it sit for a half n hour and it started. Got it to my parents house and let it sit for 2 hrs. Wouldnt start. It sat overnight and started early this afternoon. It has had oil and filter, plugs wires cap and rotor, air filter, pcv valve, radiators, fan, fan clutch, hub assemblies, and feul pump all done in the last few months and I dont know where to start now.

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My girlfriend had the same problem with my truck and it ended up needing the Cap and Rotor Changed

Hope that helps keep me updated

Posted on Jun 24, 2009

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Test for weak spark when it wont run....my guess is that its the ignition module inside distributer...they heat up and shut off spark,then cool down and work again for a while...good luck..Lee

Posted on Jun 24, 2009

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have a pressure test done on the fuel manifold to check for pump-regulator pressure and filter performance. You state that the filter was last changed in 2007 so it is well past it's blocked up date .. Run fault codes . replace the canister . Have a compression test done as the engine is getting long in the tooth and may need refreshing .. Check that the cat converter is still operational as they will block up the exhaust system and cause poor performance

Mar 02, 2014 | Mercury Sable Cars & Trucks

2 Answers

Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did


what did you do (replace it) if you still have a miss you may need to tune it up / make sure the fuel pump you bought is for the right psi for your blazer

Mar 27, 2013 | 1998 Chevrolet Blazer

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My wife's 95 blazer with the 4.3 vortec is having


I can be problem with IAC valve or motor,or there can be vacuum leak issue it its dirty Idle control valve or problem with dirt build up in throttle body.Click this link below and follow step by step troubleshooting:-----http://whatisbyme.blogspot.in/2012/05/high-idle-on-chevy-blazer.html
---------------this should help.Thanks.

May 15, 2012 | 1995 Chevrolet Blazer

1 Answer

1999 chevy blazer not starting


Check the plug wire from the ignition coil to the distributor cap.
If you haven't already, replace the distributor cap and rotor.
The GM Vortec's have issues with moisture getting inside the cap and rotor and causing problems.

Apr 24, 2012 | 1999 Chevrolet Blazer

1 Answer

I have a s-10 with vortec 4,3l fuel pump was making wierd noise for a while one day it stopped a guy helped me out by banging on the gas tank under side it ran for a while but croaked on the way home about...


To do it yourself: pull filler neck hose, wiring harness from rear lights, remove tail gate, remove bed bolts, lift bed off frame with friends and slide it back enough to access tank, replace pump unit from top of tank, splice wires as needed for new plug and reassemble in reverse order, done. is about $280.00 using parts store parts. 400 and up at a shop.

Apr 10, 2011 | 1998 Chevrolet S-10 Pickup

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I have a 2000 chevy blazer vortec 4.3 thats has the "spider" fuel rail. i have presure all the way to the intake lines. i have spark but it will not start i changee the fuel pump a couple months a...


check the 2 wire molley plug going around the front of the intake down into the injector i have found many of those tend to overheat on the plug just cut it and splice the wires back togehter

Jan 17, 2010 | 2000 Chevrolet Blazer

1 Answer

I have a 1993 chevy blazer 4.3. We replaced the fuel filter and fuel pump. When I start it up it starts okay. Once I drive it and let it sit for about 30 minutes or so it takes a couple of times before it...


Is it a vortec engine if it is your fuel injector may be the problem. Chevy ran one injector on the vortech engine it is under the upper intake manifold, it has 6 plastic hoses running to each cylinder under the manifold. if one of these hoses are leaking its dumping raw fuel into the manifold during hot soak. that fuel is getting picked up by intake air when trying to start. and flooding it out hence hard to start. gasoline evaporates rather quick so what fuel was in the manifold when you park for the night has evaporated by the next morning so no raw fuel for intake air to pick up easy start. Seen this problem many times. pretty easy fix but a bit pricey around $200

Oct 17, 2009 | 1993 Chevrolet S-10 Blazer

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1993 Chevy Blazer Oil Pressure


nothing ..normal low pressure at idle while hot ...but really should be thinking fresh oil change and filter soon..also what are the RPM's at idle hot in gear with A/C radio and other accessories running?

Nov 10, 2008 | 1993 Chevrolet S-10 Blazer

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